Dakota Johnson proved that she'll go to any lengths to back up a friend.

Johnson, 35, sat down to do Vanity Fair 's lie detector test interview, which was published on Friday, June 6. During the interrogation, the Materialists actress was asked about an instance where she exacted revenge on one of her friend's ex-boyfriends.

"You once sent a man who broke your friend's heart a gallon of gorilla s***," the interviewer said. "Can you confirm or deny that this happened?"

Johnson admitted to the act.

"I mean, there's no way that he would watch this, so, yes, I did do that," she said before explaining the prank occurred a long time ago. "And it's been quite a while. It's been some years."

The interrogator then asked how Johnson acquired the animal's feces.

"S***Senders.com," she

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